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Pthread_cleanup_push Compiler Error


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Pthread_cleanup_push Example

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Pthread Cleanup

a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to fix gcc error: expected while before void up vote 2 down vote favorite 1 So I am writing a peer-to-peer chat client that uses pthreads to manage all the IO

Pthread_testcancel Example

and when I compile the file gcc gives me the error client.c: In function ‘accepted_daemon’: client.c:115:1: error: expected ‘while’ before ‘void’ void * ^ client.c: In function ‘listen_daemon’: client.c:176:1: error: expected ‘while’ before ‘int’ int main(int argc, char *argv[]) ^ The source code for my program is #include #include #include #include #include #include #include #include #include #define error(s, e, ...) error_at_line (s, e, __FILE__, __LINE__, __VA_ARGS__) #include #include #include #include #define PORT 3248 #define PROMPT "message: " struct accepted { int fd; struct sockaddr_in addr; }; struct value { struct accepted *acc; struct value *nxt; }; pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; struct value *remote = NULL; void push_remote (struct accepted *acc) { pthread_mutex_lock (&mutex); struct value *s = malloc (sizeof *s); s->acc = acc; s->nxt = remote; remote = s; pthread_mutex_unlock (&mutex); } void pop_remote (struct accepted *acc) { pthread_mutex_lock (&mutex); struct value head =

pthread_cleanup_pop(int execute); Compile and link with -pthread. Description These functions manipulate the calling thread's stack of thread-cancellation clean-up handlers. A clean-up handler is a function that is automatically executed when a thread is canceled (or in various other circumstances described below); pthread_exit vs pthread_cancel it might, for example, unlock a mutex so that it becomes available to


other threads in the process. The pthread_cleanup_push() function pushes routine onto the top of the stack of clean-up handlers. When pthread_detach routine is later invoked, it will be given arg as its argument. The pthread_cleanup_pop() function removes the routine at the top of the stack of clean-up handlers, and optionally executes it if http://stackoverflow.com/questions/20304366/how-to-fix-gcc-error-expected-while-before-void execute is nonzero. A cancellation clean-up handler is popped from the stack and executed in the following circumstances: 1. When a thread is canceled, all of the stacked clean-up handlers are popped and executed in the reverse of the order in which they were pushed onto the stack. 2. When a thread terminates by calling pthread_exit(3), all clean-up handlers are executed as described in the preceding https://linux.die.net/man/3/pthread_cleanup_push point. (Clean-up handlers are not called if the thread terminates by performing a return from the thread start function.) 3. When a thread calls pthread_cleanup_pop() with a nonzero execute argument, the top-most clean-up handler is popped and executed. POSIX.1 permits pthread_cleanup_push() and pthread_cleanup_pop() to be implemented as macros that expand to text containing '{' and '}', respectively. For this reason, the caller must ensure that calls to these functions are paired within the same function, and at the same lexical nesting level. (In other words, a clean-up handler is only established during the execution of a specified section of code.) Calling longjmp(3) (siglongjmp(3)) produces undefined results if any call has been made to pthread_cleanup_push() or pthread_cleanup_pop() without the matching call of the pair since the jump buffer was filled by setjmp(3) (sigsetjmp(3)). Likewise, calling longjmp(3) (siglongjmp(3)) from inside a clean-up handler produces undefined results unless the jump buffer was also filled by setjmp(3) (sigsetjmp(3)) inside the handler. Return Value These functions do not return a value. Errors There are no errors. Conforming To POSIX.1-2001. Notes On Linux, the pthread_cleanup_push() and pthread_cleanup_pop() functions are implemented as macros that expand to text containing '{' and '}', respective


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